■ DESCRIPTION

The MB89920 series is a line of single-chip microcontrollers using the F2MC*-8L CPU core which can operate at low voltage but at high speed.

The microcontrollers in this series contain peripheral functions such as a PWM timer, an input capture/output compare control counter, an LCD controller/driver, an A/D converter, and a UART.

The MB89920 series can suit a wide range of applications such as analog input conversion, pulse input measurement/pulse output control, serial communications control, and display control.

■ FEATURES

• High speed processing at low voltage

  Minimum execution time: 0.5 µs/8.0 MHz

• F2MC-8L family CPU core

  Instruction set optimized for controllers

     Multiplication and division instructions

     16-bit arithmetic operations

     Test and branch instructions

     Bit manipulation instructions, etc.

• 8-bit PWM timer: 2 channels (also usable as a reload timer)

• 16-bit input capture: 2 channels / 16-bit output compare: 2 channels

• 20-bit time-base counter

• UART: 1 channel (with asynchronous transfer mode and 8-bit synchronous serial mode)

• 8-bit serial interface: 1 channel (LSB first/MSB first selectability)

• 10-bit A/D converter: 8 channels

• LCD controller/driver: 28 segments × 4 commons (max. 112 pixels)

• Low-voltage detection reset

• Watchdog timer reset

• External interrupt: 4 channels

  Four channels are independent and capable of wake-up from the low-power consumption mode (with edge detection function)

• Buzzer output/clock output

• Low-power consumption modes:

  Stop mode (The software stops oscillation to minimize the current consumption.)

  Sleep mode (The CPU stops to reduce current consumption to approx. 1/3 of normal.)

  Hardware standby mode (The pin input stops oscillation.)